渤海辽东湾坳陷JX1-1反转构造与油气成藏史
摘要
以高分辨率三维地震资料为基础,利用平衡剖面模拟、Easy%Ro模拟和盆地模拟等方法,对研究区反转构造变形特征和烃源岩成熟度演化进行了定量研究和探讨,并分析了反转活动与油气成藏史的关系;研究结果表明,JX1-1反转构造自新生代以来经历了一次大规模的扭压反转作用,发生在渐新世东营组一、二段(距今30.3 Ma～23.3 Ma)沉积时期,造成盆地NW-SE向缩短2.74km,东营组约有780m的地层剥蚀量及2.73%的盆地缩短率;辽中凹陷JX1-1反转带有机质成熟度演化也显示,烃源岩均是在反转构造形成之后才陆续成熟生、排烃,并且主力烃源岩是在距今5.1 Ma才达到生、排烃高峰期;盆地模拟结果表明:由于反转作用造成JX1-1油田两期充注,第一期为距今31 Ma～24.6Ma,第二期为距今9.2Ma至今。
Based on a large number of high-resolution 3D reflection seismic data,combined with methods of the balanced profile simulation,Easy% Ro simulation and basin modeling the like,the deformation characteristics and source rock maturity evolution of inversion structures of the study area are quantitatively studied and discussed,and the relationship between the inversion structure activities and reservoir history is analyzed.The research results show that the JX1-1 inversion structure zone has experienced a large-scale twisting pressure inversion effect since the Cenozoic,during the deposition of 1st and 2nd member of Oligocene Dongying Formation(since 30.3 Ma~23.3 Ma),resulting in the shortening of the basin in the NW-SE direction by 2.74 km,and the amount of eroded strata of the Dongying Formation is about 780 m and 2.73% of the basin shortening rate.The maturity evolution of organic matter of the JX1-1 inversion structure zone of Liaoning sag also shows that the source rocks are the formation of inversion structures before being mature hydrocarbon generation and expulsion,and the main source rock reaches the hydrocarbon generation and expulsion peak period dating back to 5.1 Ma.The basin modeling results show that inversion structure effect causes two-stage filling of the JX1-1 field.The first stage of filling is from 31 Ma to 24.6 Ma ago,and the second stage of filling is 9.2 Ma ago.
Based on a large number of high-resolution 3D reflection seismic data,combined with methods of the balanced profile simulation,Easy% Ro simulation and basin modeling the like,the deformation characteristics and source rock maturity evolution of inversion structures of the study area are quantitatively studied and discussed,and the relationship between the inversion structure activities and reservoir history is analyzed.The research results show that the JX1-1 inversion structure zone has experienced a large-scale twisting pressure inversion effect since the Cenozoic,during the deposition of 1st and 2nd member of Oligocene Dongying Formation(since 30.3 Ma~23.3 Ma),resulting in the shortening of the basin in the NW-SE direction by 2.74 km,and the amount of eroded strata of the Dongying Formation is about 780 m and 2.73% of the basin shortening rate.The maturity evolution of organic matter of the JX1-1 inversion structure zone of Liaoning sag also shows that the source rocks are the formation of inversion structures before being mature hydrocarbon generation and expulsion,and the main source rock reaches the hydrocarbon generation and expulsion peak period dating back to 5.1 Ma.The basin modeling results show that inversion structure effect causes two-stage filling of the JX1-1 field.The first stage of filling is from 31 Ma to 24.6 Ma ago,and the second stage of filling is 9.2 Ma ago.
引文
[1]Lamplugh G W.Structure of the Weald and analogues tracts.Quarterly Journal Geological Society:LXXIII-XCT(Anniversary Address of thePresident)[M].1920.
[2]Glennie K W,Boegner P L E.Sole pit inversion tectonics[M].Petroleum Geology of the Continental Shelf of North-West Europe.London:Institute of Petroleum,1981,110-120.
[3]Tim R.Charlton.The petroleum potential of inversion anticlines in the Banda Arc[J].AAPG Bulletin,2004,88(5):565-585.
[4]杨风丽,王敏雪,庄建建,等.西湖凹陷反转构造定量运动学过程及对油气的控制作用[J].石油学报,2010,31(4):596-601.
[5]张功成,徐宏,刘和甫,等.松辽盆地反转构造与油气田分布[J].石油学报,1996,17(2):9-13.
[6]郭卫星,漆家福,李明刚,等.库车坳陷克拉苏构造带的反转构造及其形成机制[J].石油学报,2010,31(3):379-385.
[8]朱筱敏,董艳蕾,杨俊生,等.辽东湾地区古近系层序地层格架与沉积体系分布[J].中国科学(D辑)增刊,2008(38):1-10.
[9]龚再升,蔡东升,张功成.郯庐断裂对渤海海域东部油气成藏的控制作用[J].石油学报,2007,28(4):1-10.
[10]周心怀,刘震,李维莲.辽东湾断陷油气成藏机理[M].石油工业出版社,2009.
[11]朱伟林,米立军,龚再升,等.渤海海域油气成藏与勘探[M].科学出版社,2009.
[12]蔡希源,王同和.中国油气区反转构造[M].北京:石油工业出版社,2001
[13]王杰,王铁冠,陈践发,等.松辽盆地双城-太平川地区烃源岩生烃潜力评价[J].矿物岩石,2006,26(3):100-106.
[14]邓津辉,周心怀,魏刚,等.郯庐走滑断裂带活动特征与油气成藏的关系—以金县地区为例[J].石油与天然气地质,2008,29(1):102-106.
[15]操应长,姜在兴.渤海湾盆地埕岛东斜坡地区东三段油气成岩成藏模式[J].矿物岩石,2002,22(2):64-68.
[2]Glennie K W,Boegner P L E.Sole pit inversion tectonics[M].Petroleum Geology of the Continental Shelf of North-West Europe.London:Institute of Petroleum,1981,110-120.
[3]Tim R.Charlton.The petroleum potential of inversion anticlines in the Banda Arc[J].AAPG Bulletin,2004,88(5):565-585.
[4]杨风丽,王敏雪,庄建建,等.西湖凹陷反转构造定量运动学过程及对油气的控制作用[J].石油学报,2010,31(4):596-601.
[5]张功成,徐宏,刘和甫,等.松辽盆地反转构造与油气田分布[J].石油学报,1996,17(2):9-13.
[6]郭卫星,漆家福,李明刚,等.库车坳陷克拉苏构造带的反转构造及其形成机制[J].石油学报,2010,31(3):379-385.
[8]朱筱敏,董艳蕾,杨俊生,等.辽东湾地区古近系层序地层格架与沉积体系分布[J].中国科学(D辑)增刊,2008(38):1-10.
[9]龚再升,蔡东升,张功成.郯庐断裂对渤海海域东部油气成藏的控制作用[J].石油学报,2007,28(4):1-10.
[10]周心怀,刘震,李维莲.辽东湾断陷油气成藏机理[M].石油工业出版社,2009.
[11]朱伟林,米立军,龚再升,等.渤海海域油气成藏与勘探[M].科学出版社,2009.
[12]蔡希源,王同和.中国油气区反转构造[M].北京:石油工业出版社,2001
[13]王杰,王铁冠,陈践发,等.松辽盆地双城-太平川地区烃源岩生烃潜力评价[J].矿物岩石,2006,26(3):100-106.
[14]邓津辉,周心怀,魏刚,等.郯庐走滑断裂带活动特征与油气成藏的关系—以金县地区为例[J].石油与天然气地质,2008,29(1):102-106.
[15]操应长,姜在兴.渤海湾盆地埕岛东斜坡地区东三段油气成岩成藏模式[J].矿物岩石,2002,22(2):64-68.
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